/**
 ******************************************************************************
 *
 * @file       lineardialgadgetwidget.h
 * @author     Edouard Lafargue Copyright (C) 2010.
 * @addtogroup GCSPlugins GCS Plugins
 * @{
 * @addtogroup LinearDialPlugin Linear Dial Plugin
 * @{
 * @brief Impliments a gadget that displays linear gauges
 *****************************************************************************/
/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef LINEARDIALGADGETWIDGET_H_
#define LINEARDIALGADGETWIDGET_H_

#include "lineardialgadgetconfiguration.h"
#include "extensionsystem/pluginmanager.h"
#include "uavobjectmanager.h"
#include "uavobject.h"
#include <QGraphicsView>
#include <QtSvg/QSvgRenderer>
#include <QtSvg/QGraphicsSvgItem>

#include <QFile>
#include <QTimer>

class LineardialGadgetWidget : public QGraphicsView {
    Q_OBJECT

public:
    LineardialGadgetWidget(QWidget *parent = 0);
    ~LineardialGadgetWidget();
    void enableOpenGL(bool flag);
    void setDialFile(QString dfn);
    void paint();
    void setRange(double min, double max)
    {
        minValue = min; maxValue = max;
    }
    void setGreenRange(double min, double max)
    {
        greenMin = min; greenMax = max;
    }
    void setYellowRange(double min, double max)
    {
        yellowMin = min; yellowMax = max;
    }
    void setRedRange(double min, double max)
    {
        redMin = min; redMax = max;
    }
    void connectInput(QString obj, QString field);
    void setIndex(double val);
    void setDialFont(QString fontProps);
    void setFactor(double val)
    {
        factor = val;
    }
    void setDecimalPlaces(int val)
    {
        places = val;
    }

public slots:
    void updateIndex(UAVObject *object1);


protected:
    void paintEvent(QPaintEvent *event);
    void resizeEvent(QResizeEvent *event);

private:

private slots:
    void moveIndex();

private:
    QSvgRenderer *m_renderer;
    QGraphicsSvgItem *background;
    QGraphicsSvgItem *foreground;
    QGraphicsSvgItem *index;
    QGraphicsSvgItem *green;
    QGraphicsSvgItem *yellow;
    QGraphicsSvgItem *red;
    QGraphicsSvgItem *fieldSymbol;

    QGraphicsTextItem *fieldName;
    QGraphicsTextItem *fieldValue;

    // Simple flag to skip rendering if the
    bool fgenabled; // layer does not exist.
    bool verticalDial; // True if the dials scales vertically.

    qreal startX; // Where we should draw the bargraph
    qreal startY; // green/yellow/red zones.
    qreal bargraphSize;
    qreal indexHeight;
    qreal indexWidth;

    double minValue;
    double maxValue;
    double greenMin;
    double greenMax;
    double yellowMin;
    double yellowMax;
    double redMin;
    double redMax;
    double factor;
    int places;

    // The Value and target variables
    // are expressed in degrees
    double indexTarget;
    double indexValue;

    // Rotation timer
    QTimer dialTimer;

    // Name of the fields to read when an update is received:
    UAVDataObject *obj1;
    QString field1;
    QString subfield1;
    bool haveSubField1;
};
#endif /* LINEARDIALGADGETWIDGET_H_ */
